Acta Cryst. (2007). E63, m2321-m2322  [ doi:10.1107/S1600536807039220 ]

Poly[[pentaaqua[₄-(5-carboxylato-m-phenylenedioxy)diacetato]cadmium(II)sodium(I)] tetrahydrate]

Y.-H. Wen and S. W. Ng

Abstract: In the crystal structure of the title compound, [CdNa(C₁₁H₇O₈)(H₂O)₅]·4H₂O, the carboxylate trianion binds to a triaquacadmium unit through one O atom of its 5-carboxylate group. It also chelates through two O atoms of the 5-oxyacetate group to an adjacent triaquacadmium unit to form a linear chain. The diaquasodium unit is chelated by the 1-oxyacetate [-O-CH₂-C(O)O-] group of one trianion and by the 3-oxyacetate group of another trianion. Both cadmium and sodium have six-coordinate octahedral geometries in a ribbon structure. The ribbons are linked into a three-dimensional network by hydrogen bonds.

Online 10 August 2007

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